Annihilation of the solar system

A footstep woke them up. It was Wu Fan who was walking from the dormitory to the Near-Earth Object Observation Building. They discovered each other almost at the same time, and Wu Fan came over to help Wei Xu share some things.

"Wu Fan, aren't you on day shift today? Why are you going to the observation building at this late hour?" Wei Xu asked.

Wu Fan's body smelled of cigarette smoke, his eyes were full of blood, and his face was full of haggard. He coughed dryly and moistened his throat:

"Ahem...! Hey! I can't sleep. For some reason, I feel agitated as soon as I close my eyes when I get back to the dormitory. I'd better go to the observation building to be more at ease."

When we arrived at the Near-Earth Object Observation Building, there was no one in front of the main control computer of the telescope. Dots of spots were displayed on the two huge screens. Accompanied by the rhythmic mechanical sound of the drive motor of the Near-Earth Object Telescope, it was suspiciously operating autonomously.

Celestial body survey and observation procedures.

Lin Tianyu and Liu Mengzhu were both in front of two screens of another computer, which displayed the latest observation photos of broken ice belts and spore groups uploaded by the eda scientific research platform. Seeing Xia Lan and the others coming in, Liu Mengzhu stepped forward and took the

Wei Xu asked while holding something in his hand:

"Sister Lan, how is today's regular meeting?"

Xia Lan shook her head slightly and sighed softly:

"There is no substantial progress, it's just some inferences based on imperfect observation data. Apart from these, we can't do much more."

"The detectors are unreliable and cannot collect and analyze samples of spore clusters or broken ice belts. To understand them only by long-distance observation is like trying to build a washing machine with the instruction manual of the washing machine. It is a fantasy."

Lin Tianyu whispered from the side.

"If the detector that flew towards the ice-breaking belt after the last 'Windmill Project' lost contact, is it possible that it is still working if it did not crash?" Liu Mengzhu asked curiously.

Xia Lan replied:

"I participated in the design of the 'Windmill Detector'. If the detector successfully nails an ice block without crashing, it will store the collected sample analysis data in the memory. Then it will periodically

The signal is transmitted until the battery is exhausted. But it has been almost six years since the windmill detector lost contact, and the battery has basically been exhausted."

"Don't count on that detector. It won't be long before we can see with our own eyes what they look like." Lin Tianyu said.

Wei Xu finished cleaning the things he brought back and said:

"By the way, how is the situation on Titan? Is there any latest observational data?"

Lin Tianyu called up the optical and thermal imaging observation photos of Titan from the screen:

"Eda has restarted periodic observations of Titan since the last time you found activity on Titan. The latest observation results show that they have fully resumed their activities on Titan's surface. For spectroscopy, infrared

The analysis of X-band and X-band shows that their activity level is basically the same as when we first discovered them during the crisis era."

"In other words, they will soon start spraying spores into Titan's low orbit again." Liu Mengzhu's voice was full of sighs and sadness.

"I'm afraid so. Now it seems that their attacks are continuous." Lin Tianyu replied.

Wu Fan looked at the photo of Titan on the screen with distracted eyes, and his voice was filled with a sense of despair and powerlessness:

"Is there no way to stop them from continuing to create organic life on Titan? The first round hasn't happened yet, and the second round is almost on the way."

Wei Xu took out a cigarette from the cigarette case on Wu Fan's table and handed it to Wu Fan, laughing and saying:

"Brother, don't think so much. If we can hold on in this first round, then there won't be much of a problem in the rest. If we don't hold up in this first round, then the rest will have nothing to do with us. To be optimistic,

Everyone has to bear it together, and you are not left to bear it alone."

The second half of Wei Xu's words added a touch of sadness to the originally dull atmosphere. If the entire ethnic group has to face death at the same time, this will indeed make people feel relieved. But if the entire civilization is facing destruction, it will not be compromised.

Unmistakable sadness.

"Is there still no result from the survey of suspicious near-Earth objects? According to the analysis of the wake left by interstellar dust when Oumuamua last passed, it should have reached the solar system. And I think this Oumuamua is not the same type as the previous one.

It should be related to the attack, and it is very likely that he will fly directly to the earth." Xia Lan said.

Lin Tianyu walked to the main control computer of the telescope and called up the automatic sky survey analysis report:

"There is nothing, which is normal. The core component of 'Oumuamua is so small that if it does not pass through interstellar dust clouds or spontaneously emit electromagnetic waves when flying in space, it is almost impossible for our observation equipment to detect it beyond the range of 0.5 au.

Find it out."

"In this way, it should still fly towards the solar system at 1/3 the speed of light." Wei Xu said.

"Old Wei, what is the basis for your speculation?" Liu Mengzhu asked.

Wei Xu looked at the sky pointed by the survey telescope and said:

"When we discovered the contrail last time, we analyzed its orbit. It will fly from an orbit higher than the ecliptic plane of the solar system to the inner solar system, so that no celestial body will block our observation path. According to calculations, it is now within

The solar system has to decelerate from 1/3 the speed of light at 100,000 kilometers per second to an orbital speed of about ten kilometers per second. How much noise would there be!"

"Old Wei, what do you mean?" Wu Fan asked.

Wei Xu explained:

"Although we don't know what power device Oumuamua uses, I think we can't escape Newton's third law. It must have a reaction force to complete the deceleration. And such a violent deceleration must be accompanied by a huge energy release.

, when energy is released, the temperature will increase.

There are now dozens of survey telescopes on the ground monitoring the entire solar system. Even if Oumuamua is small, we will definitely detect such a violent release of high temperature. As long as they don't want to hit it at 1/3 the speed of light.

Earth, and then turn the Earth into a planet unsuitable for life, then it is only a matter of time before it is discovered."

Wu Fan put down his cigarette, returned to his desk and typed on the computer for a while:

"I did a simple calculation and found that Oumuamua's current orbital distance from the earth will not exceed 1 au. In such a short distance, it is difficult for me to imagine how it can achieve such a large acceleration and deceleration.

Let me make an inappropriate analogy. If we use chemical fuels that we are familiar with to complete deceleration within this distance, its engine must be at least the size of three football fields. The liquid hydrogen and liquid oxygen fuel consumed can fill the Yangtze and Yellow Rivers.

, this is incredible!”

"Fortunately, their home planet is far away from us, otherwise... we might not even have the need to prepare for defense." Liu Mengzhu lamented.

Wei Xu walked to the main control computer of the telescope, stared blankly at the slowly moving picture on the screen, and muttered to himself:

"I'd like to see how you slow down."

As soon as Wei Xu finished speaking, a piercing alarm sounded from the speaker! At the same time, the AI ​​voice broadcast read repeatedly:

"Suspicious target found! Focusing! Suspicious target found! Focusing!"